Examine source code of Pastel sky

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Pastel sky",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(164, 140, 184, 0.36)",
      "toolbar_text": "rgba(222, 176, 255, 0.75)",
      "frame": "rgb(198, 174, 217)",
      "tab_background_text": "rgb(192, 172, 226)",
      "toolbar_field": "rgba(235, 206, 255, 0.23)",
      "toolbar_field_text": "rgba(237, 224, 255, 0.35)",
      "tab_line": "rgba(243, 222, 255, 0.45)",
      "popup": "rgba(175, 150, 214, 0.58)",
      "popup_text": "rgba(222, 193, 255, 0.49)",
      "button_background_hover": "rgba(96, 81, 125, 0.43)",
      "icons_attention": "rgba(102, 75, 149, 0.58)",
      "icons": "rgba(142, 125, 173, 0.48)",
      "tab_background_separator": "rgba(212, 179, 241, 0.61)",
      "tab_selected": "rgba(209, 147, 252, 0.39)",
      "tab_text": "rgba(221, 246, 249, 0.59)",
      "toolbar_bottom_separator": "rgba(210, 170, 237, 0.61)",
      "toolbar_field_border_focus": "rgba(213, 172, 249, 0.72)",
      "toolbar_field_border": "rgba(225, 197, 245, 0.61)",
      "toolbar_field_focus": "rgba(195, 138, 247, 0.61)",
      "toolbar_field_highlight_text": "rgba(197, 128, 245, 0.61)",
      "toolbar_field_highlight": "rgba(208, 167, 215, 0.48)",
      "toolbar_field_separator": "rgba(189, 158, 244, 0.36)",
      "toolbar_field_text_focus": "rgba(178, 152, 200, 0.61)",
      "toolbar_top_separator": "rgba(160, 130, 203, 0.57)",
      "toolbar_vertical_separator": "rgba(214, 167, 255, 0.61)",
      "tab_loading": "rgba(243, 222, 255, 0.45)"
    }
  }
}